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Old Apr 22, 2012, 10:42 PM
Flagstaff, AZ
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New Video: Flips and Spins with Le Fish Light

Here is a video from this past weeks flying at Mormon Lake Overlook. I had just replaced the tail group of my Le Fish Light with something a little different. The vertical stab and rudder were much more low aspect and had about 60 of throw both ways. The horizontal stab had lightening holes cut behind the spar and additional counter weights added to the LE... balancing the stab fore and aft. I liked the changes. The new rudder seemed to help with stall maneuvers... especially the spins and the H-Stab never fluttered.

Dawson

Flips and Spins with Le Fish Light (2 min 47 sec)
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Old Apr 22, 2012, 11:06 PM
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Pretty strong conditions, must've been at least 20-25? That's tough with such a light plane

The negative spin beginning at 1:45 was really cool... didn't hardly lose any altitude and just pirouetted around the nose. Super interesting!

The new rudder looks cool and seems to be very effective.

Love the kicker at the end... never stop flying until it's on the ground... for a while!

Steve
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Old Apr 22, 2012, 11:25 PM
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Awesome :-D Those flips are getting better and better when they're combined with the spins
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Old Apr 22, 2012, 11:29 PM
Jim in San Diego
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Dawson, I am so jealous of your flying site and your skills. I really laughed out loud when you did those spins and didn't look to be losing any altitude. And the floops. Niiiice.

Between you, Steve, Swiss Peter and a few others I'm looking forward to getting more use out of my left thumb

Thanks,
Jim
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Old Apr 23, 2012, 09:23 AM
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Dawson I've added a post about this video to SlopeAerobatics

http://www.slopeaerobatics.com/2012/...ght-by-dawson/

Really nice, I can't wait to come check this site (and the craters) out!!

Steve
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Old Apr 23, 2012, 10:09 AM
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Wow! Absolutely inspired and inspirational! It’s fascinating to watch how fast VTPR planes and technique are evolving.
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Old Apr 23, 2012, 10:47 AM
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Originally Posted by Capt. Gary View Post
Wow! Absolutely inspired and inspirational! It’s fascinating to watch how fast VTPR planes and technique are evolving.
Agreed! While the flying Dawson is doing here isn't VTPR - it was clearly waaay too blustery to get close to the ground - it does show that a lightweight plane intended for VTPR can obviously still fly "normal" (or what's become normal since the revolution of last year ) aerobatics with grace and aplomb - even in strong conditions.

The news about the horizontal stabilizer not fluttering in those conditions, where the plane is really going fast (compared to our typical light lift VTPR flying especially), is fantastic news. Having a stabilizer with enough travel to allow flips while also making sure that it doesn't flutter at high speed has been a persistent engineering problem the experimenters in this area have faced.

It sounds like, once again, Dawson is on to something here (he also contributed the innovative pulley system which has proven extremely successful for these lightweight, flexible planes).

So not only does Dawson contribute fantastic videos, he persists in testing innovative ideas that provide real solutions towards making this kind of flying more accessible. I'm a huge fan!!

Steve
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Last edited by surfimp; Apr 23, 2012 at 10:53 AM.
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Old Apr 23, 2012, 10:53 AM
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You all wanna slow down a notch? Im waiting for epp to arrive :-)
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Old Apr 23, 2012, 11:22 AM
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Thanks… Steve, Dawson!
It was Mr. Hendersons video “Dream-Flight Weasel Evolution flying "Mellow" at Mormon Lake Overlook, 05/19/09 that got us started using Weasels for research.
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Old Apr 23, 2012, 01:57 PM
FSD
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Wow...some great stuff there Dawson...some things I have never seen before like a roll into a flatspin...more than once. You keep raising the bar...there is no way to catch up.

-Paige
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Old Apr 23, 2012, 02:18 PM
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I worry more and more that NASA, the CIA, NSA or The Men in Black are gonna' kidnap Dawson and we lose our greatest source of inspiration and video entertainment. Somebody plant a tracking chip in this guy!!

Ken
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Old Apr 23, 2012, 03:39 PM
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Thanks for all the positive comments. It is appreciated.

It was a fun condition that day... 15-20+ mph blowing straight into the right side mini-bowl. The lift is pretty vertical there... especially in the juicy spots. It is much easier to fly a light glider in vertical lift (as opposed to low angle slopes)... if you stay aggressive. However when you miss a move you can get spit out pretty quick (as in my "landing" sequence).

I was so happy to get that crazy inverted spin on video. It was pure serendipity. I was practicing lots of spin combinations and that time a strong blast of lift (thermal?) refused to let my glider descend... so I was able to get in a number of revolutions... just hanging there. There were a few folks watching me fly at the time and we all burst into laughter after that spin. (This makes a good case to always fly with the GoPro... you never know when something "special" is going to happen.)

I have attached a couple pics of the new v-stab and modified h-stab.

The inspiration for the low aspect rudder came from John's and Dan's "Shark" gliders... not as fishy as their rudders but a big change from my traditional VTPR style rudder.

My full flying "Mad" H-Stab is made from 6mm sheet EPP (1.9 lb) and covered with 1.7 mil laminate. I cut holes in the foam behind the spar and added about 12 grams of lead/copper to the LE to get her balanced fore and aft. So far not flutter!

Paige: Regarding catching up... I hope you get a chance to fly with some of the other IYF/VTPR folks. It was crazy at WeaselFest... so much energy and great flying. It was cool to see all the pilots and gliders. I think everyone left feeling energized and very motivated to push slope aerobatics forward... into the unknown.

Regards,

Dawson
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Old Apr 23, 2012, 03:41 PM
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Originally Posted by dawsonh View Post
Paige: Regarding catching up... I hope you get a chance to fly with some of the other IYF/VTPR folks. It was crazy at WeaselFest... so much energy and great flying. It was cool to see all the pilots and gliders. I think everyone left feeling energized and very motivated to push slope aerobatics forward... into the unknown.
+1,000,000,000,000

Steve
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Old Apr 23, 2012, 06:02 PM
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Hey Dawson, forgive me if i've missed it - but what was the elevator throw you had?
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Old Apr 23, 2012, 06:51 PM
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Originally Posted by Rhys Porter View Post
Hey Dawson, forgive me if i've missed it - but what was the elevator throw you had?
About like this:

Mad Elevator Using Pulleys (0 min 30 sec)




Steve
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